[lacnog] Weekly Global IPv4 Routing Table Report

Routing Table Analysis Role Account cscora en apnic.net
Vie Sep 8 15:02:09 -03 2023


This is an automated weekly mailing describing the state of the Global
IPv4 Routing Table as seen from APNIC's router in Japan.

The posting is sent to APOPS, NANOG, AfNOG, SANOG, PacNOG, SAFNOG
UKNOF, TZNOG, MENOG, BJNOG, SDNOG, CMNOG, LACNOG and the RIPE Routing WG.

Daily listings are sent to bgp-stats en lists.apnic.net.

For historical data, please see https://thyme.apnic.net.

If you have any comments please contact Philip Smith <pfsinoz en gmail.com>.

IPv4 Routing Table Report   04:00 +10GMT Sat 09 Sep, 2023

  BGP Table (Global) as seen in Japan.

Report Website:     https://thyme.apnic.net
Detailed Analysis:  https://thyme.apnic.net/current/

Analysis Summary
----------------

BGP routing table entries examined:                              927731
    Prefixes after maximum aggregation (per Origin AS):          352669
    Deaggregation factor:                                          2.63
    Unique aggregates announced (without unneeded subnets):      452710
Total ASes present in the Internet Routing Table:                 74776
    Prefixes per ASN:                                             12.41
Origin-only ASes present in the Internet Routing Table:           64229
Origin ASes announcing only one prefix:                           26357
Transit ASes present in the Internet Routing Table:               10547
Transit-only ASes present in the Internet Routing Table:            454
Average AS path length visible in the Internet Routing Table:       4.2
    Max AS path length visible:                                      70
    Max AS path prepend of ASN (263725)                              64
Prefixes from unregistered ASNs in the Routing Table:              1053
    Number of instances of unregistered ASNs:                      1055
Number of 32-bit ASNs allocated by the RIRs:                      42576
Number of 32-bit ASNs visible in the Routing Table:               35055
Prefixes from 32-bit ASNs in the Routing Table:                  175008
Number of bogon 32-bit ASNs visible in the Routing Table:            54
Special use prefixes present in the Routing Table:                    1
Prefixes being announced from unallocated address space:            601
Number of addresses announced to Internet:                   3056133888
    Equivalent to 182 /8s, 40 /16s and 231 /24s
    Percentage of available address space announced:               82.5
    Percentage of allocated address space announced:               82.5
    Percentage of available address space allocated:              100.0
    Percentage of address space in use by end-sites:               99.5
Total number of prefixes smaller than registry allocations:      308927

APNIC Region Analysis Summary
-----------------------------

Prefixes being announced by APNIC Region ASes:                   246243
    Total APNIC prefixes after maximum aggregation:               70661
    APNIC Deaggregation factor:                                    3.48
Prefixes being announced from the APNIC address blocks:          239918
    Unique aggregates announced from the APNIC address blocks:    98702
APNIC Region origin ASes present in the Internet Routing Table:   13628
    APNIC Prefixes per ASN:                                       17.60
APNIC Region origin ASes announcing only one prefix:               4057
APNIC Region transit ASes present in the Internet Routing Table:   1797
Average APNIC Region AS path length visible:                        4.4
    Max APNIC Region AS path length visible:                         24
Number of APNIC region 32-bit ASNs visible in the Routing Table:   8946
Number of APNIC addresses announced to Internet:              772854656
    Equivalent to 46 /8s, 16 /16s and 211 /24s
APNIC AS Blocks        4608-4864, 7467-7722, 9216-10239, 17408-18431
(pre-ERX allocations)  23552-24575, 37888-38911, 45056-46079, 55296-56319,
                       58368-59391, 63488-64098, 64297-64395, 131072-153913
APNIC Address Blocks     1/8,  14/8,  27/8,  36/8,  39/8,  42/8,  43/8,
                        49/8,  58/8,  59/8,  60/8,  61/8, 101/8, 103/8,
                       106/8, 110/8, 111/8, 112/8, 113/8, 114/8, 115/8,
                       116/8, 117/8, 118/8, 119/8, 120/8, 121/8, 122/8,
                       123/8, 124/8, 125/8, 126/8, 133/8, 150/8, 153/8,
                       163/8, 171/8, 175/8, 180/8, 182/8, 183/8, 202/8,
                       203/8, 210/8, 211/8, 218/8, 219/8, 220/8, 221/8,
                       222/8, 223/8,

ARIN Region Analysis Summary
----------------------------

Prefixes being announced by ARIN Region ASes:                    271947
    Total ARIN prefixes after maximum aggregation:               123794
    ARIN Deaggregation factor:                                     2.20
Prefixes being announced from the ARIN address blocks:           274838
    Unique aggregates announced from the ARIN address blocks:    131523
ARIN Region origin ASes present in the Internet Routing Table:    19086
    ARIN Prefixes per ASN:                                        14.40
ARIN Region origin ASes announcing only one prefix:                6946
ARIN Region transit ASes present in the Internet Routing Table:    1964
Average ARIN Region AS path length visible:                         3.7
    Max ARIN Region AS path length visible:                          24
Number of ARIN region 32-bit ASNs visible in the Routing Table:    4827
Number of ARIN addresses announced to Internet:              1279836416
    Equivalent to 76 /8s, 72 /16s and 193 /24s
ARIN AS Blocks         1-1876, 1902-2042, 2044-2046, 2048-2106
(pre-ERX allocations)  2138-2584, 2615-2772, 2823-2829, 2880-3153
                       3354-4607, 4865-5119, 5632-6655, 6912-7466
                       7723-8191, 10240-12287, 13312-15359, 16384-17407
                       18432-20479, 21504-23551, 25600-26591,
                       26624-27647, 29696-30719, 31744-33791
                       35840-36863, 39936-40959, 46080-47103
                       53248-55295, 62464-63487, 64198-64296, 393216-401308
ARIN Address Blocks      3/8,   4/8,   6/8,   7/8,   8/8,   9/8,  11/8,
                        12/8,  13/8,  15/8,  16/8,  17/8,  18/8,  19/8,
                        20/8,  21/8,  22/8,  23/8,  24/8,  26/8,  28/8,
                        29/8,  30/8,  32/8,  33/8,  34/8,  35/8,  38/8,
                        40/8,  44/8,  47/8,  48/8,  50/8,  52/8,  53/8,
                        54/8,  55/8,  56/8,  57/8,  63/8,  64/8,  65/8,
                        66/8,  67/8,  68/8,  69/8,  70/8,  71/8,  72/8,
                        73/8,  74/8,  75/8,  76/8,  96/8,  97/8,  98/8,
                        99/8, 100/8, 104/8, 107/8, 108/8, 128/8, 129/8,
                       130/8, 131/8, 132/8, 134/8, 135/8, 136/8, 137/8,
                       138/8, 139/8, 140/8, 142/8, 143/8, 144/8, 146/8,
                       147/8, 148/8, 149/8, 152/8, 155/8, 156/8, 157/8,
                       158/8, 159/8, 160/8, 161/8, 162/8, 164/8, 165/8,
                       166/8, 167/8, 168/8, 169/8, 170/8, 172/8, 173/8,
                       174/8, 184/8, 192/8, 198/8, 199/8, 204/8, 205/8,
                       206/8, 207/8, 208/8, 209/8, 214/8, 215/8, 216/8,
                      

RIPE Region Analysis Summary
----------------------------

Prefixes being announced by RIPE Region ASes:                    260388
    Total RIPE prefixes after maximum aggregation:               123026
    RIPE Deaggregation factor:                                     2.12
Prefixes being announced from the RIPE address blocks:           256431
    Unique aggregates announced from the RIPE address blocks:    160008
RIPE Region origin ASes present in the Internet Routing Table:    28388
    RIPE Prefixes per ASN:                                         9.03
RIPE Region origin ASes announcing only one prefix:               12038
RIPE Region transit ASes present in the Internet Routing Table:    3932
Average RIPE Region AS path length visible:                         4.3
    Max RIPE Region AS path length visible:                          34
Number of RIPE region 32-bit ASNs visible in the Routing Table:   11311
Number of RIPE addresses announced to Internet:               716692096
    Equivalent to 42 /8s, 183 /16s and 218 /24s
RIPE AS Blocks         1877-1901, 2043, 2047, 2107-2136, 2585-2614
(pre-ERX allocations)  2773-2822, 2830-2879, 3154-3353, 5377-5631
                       6656-6911, 8192-9215, 12288-13311, 15360-16383
                       20480-21503, 24576-25599, 28672-29695
                       30720-31743, 33792-35839, 38912-39935
                       40960-45055, 47104-52223, 56320-58367
                       59392-61439, 61952-62463, 64396-64495
                       196608-216475
RIPE Address Blocks      2/8,   5/8,  25/8,  31/8,  37/8,  46/8,  51/8,
                        62/8,  77/8,  78/8,  79/8,  80/8,  81/8,  82/8,
                        83/8,  84/8,  85/8,  86/8,  87/8,  88/8,  89/8,
                        90/8,  91/8,  92/8,  93/8,  94/8,  95/8, 109/8,
                       141/8, 145/8, 151/8, 176/8, 178/8, 185/8, 188/8,
                       193/8, 194/8, 195/8, 212/8, 213/8, 217/8,

LACNIC Region Analysis Summary
------------------------------

Prefixes being announced by LACNIC Region ASes:                  118386
    Total LACNIC prefixes after maximum aggregation:              28500
    LACNIC Deaggregation factor:                                   4.15
Prefixes being announced from the LACNIC address blocks:         117393
    Unique aggregates announced from the LACNIC address blocks:   49158
LACNIC Region origin ASes present in the Internet Routing Table:  11024
    LACNIC Prefixes per ASN:                                      10.65
LACNIC Region origin ASes announcing only one prefix:              2693
LACNIC Region transit ASes present in the Internet Routing Table:  2318
Average LACNIC Region AS path length visible:                       4.9
    Max LACNIC Region AS path length visible:                        70
Number of LACNIC region 32-bit ASNs visible in the Routing Table:  8841
Number of LACNIC addresses announced to Internet:             178478848
    Equivalent to 10 /8s, 163 /16s and 95 /24s
LACNIC AS Blocks       26592-26623, 27648-28671, 52224-53247,
                       61440-61951, 64099-64197, 262144-273820 + ERX transfers
LACNIC Address Blocks  177/8, 179/8, 181/8, 186/8, 187/8, 189/8, 190/8,
                       191/8, 200/8, 201/8,

AfriNIC Region Analysis Summary
-------------------------------

Prefixes being announced by AfriNIC Region ASes:                  29714
    Total AfriNIC prefixes after maximum aggregation:              5967
    AfriNIC Deaggregation factor:                                  4.98
Prefixes being announced from the AfriNIC address blocks:         38550
    Unique aggregates announced from the AfriNIC address blocks:  12815
AfriNIC Region origin ASes present in the Internet Routing Table:  1791
    AfriNIC Prefixes per ASN:                                     21.52
AfriNIC Region origin ASes announcing only one prefix:              623
AfriNIC Region transit ASes present in the Internet Routing Table:  334
Average AfriNIC Region AS path length visible:                      4.9
    Max AfriNIC Region AS path length visible:                       28
Number of AfriNIC region 32-bit ASNs visible in the Routing Table: 1130
Number of AfriNIC addresses announced to Internet:            107811840
    Equivalent to 6 /8s, 109 /16s and 20 /24s
AfriNIC AS Blocks      36864-37887, 327680-329727 & ERX transfers
AfriNIC Address Blocks  41/8,  45/8, 102/8, 105/8, 154/8, 196/8, 197/8,
                      

APNIC Region per AS prefix count summary
----------------------------------------

   ASN  No of nets  /20 equiv  MaxAgg  Description
  9808        9489       8729      41  CHINAMOBILE-CN China Mobile Communicati
  7545        5727        785     689  TPG-INTERNET-AP TPG Telecom Limited, AU
  4538        4864       4192      75  ERX-CERNET-BKB China Education and Rese
 18403        4337        347      25  FPT-AS-AP FPT Telecom Company, VN
  7713        3598       1043      63  TELKOMNET-AS-AP PT Telekomunikasi Indon
 45899        3332       1840      98  VNPT-AS-VN VNPT Corp, VN
  9498        3149        498     251  BBIL-AP BHARTI Airtel Ltd., IN
  7552        2931       1330      20  VIETEL-AS-AP Viettel Group, VN
  4766        2543      11270     601  KIXS-AS-KR Korea Telecom, KR
 24560        2498        848     389  AIRTELBROADBAND-AS-AP Bharti Airtel Ltd

Complete listing at https://thyme.apnic.net/current/data-ASnet-APNIC

ARIN Region per AS prefix count summary
---------------------------------------

   ASN  No of nets  /20 equiv  MaxAgg  Description
 16509        9060      10989    3267  AMAZON-02, US
 11492        4512        299     673  CABLEONE, US
  7155        4179        288     101  VIASAT-SP-BACKBONE, US
 22773        3551       3056     310  ASN-CXA-ALL-CCI-22773-RDC, US
  6327        3536       1319      66  SHAW, CA
   749        3152      54959    2404  DNIC-AS-00749, US
 16625        3004       1442    2277  AKAMAI-AS, US
   367        2967       3827    1395  DNIC-ASBLK-00306-00371, US
396982        2690       3596     387  GOOGLE-CLOUD-PLATFORM, US
 30036        2487        356     405  MEDIACOM-ENTERPRISE-BUSINESS, US

Complete listing at https://thyme.apnic.net/current/data-ASnet-ARIN

RIPE Region per AS prefix count summary
---------------------------------------

   ASN  No of nets  /20 equiv  MaxAgg  Description
 12479        7359       1713     145  UNI2-AS, ES
 39891        4897        290      61  ALJAWWALSTC-AS, SA
 20940        4076       3398     153  AKAMAI-ASN1, NL
  8551        3456        368      34  BEZEQ-INTERNATIONAL-AS Bezeqint Interne
 12389        2981       2296     914  ROSTELECOM-AS, RU
  9009        2718        252    1391  M247, RO
 34984        2328        362     597  TELLCOM-AS, TR
 58224        1752        933     517  TCI, IR
 13188        1606        100      27  TRIOLAN, UA
 61317        1504        101    1169  ASDETUK www.heficed.com, US

Complete listing at https://thyme.apnic.net/current/data-ASnet-RIPE

LACNIC Region per AS prefix count summary
-----------------------------------------

   ASN  No of nets  /20 equiv  MaxAgg  Description
  8151       11767       3367     596  UNINET, MX
 10620        3538        506     849  Telmex Colombia S.A., CO
 13999        2406        343     627  Mega Cable, S.A. de C.V., MX
 11830        2002        369      64  Instituto Costarricense de Electricidad
 28573        1324       2324     232  Claro NXT Telecomunicacoes Ltda, BR
  6503        1302        344     510  Axtel, S.A.B. de C.V., MX
  3816        1295        764     191  COLOMBIA TELECOMUNICACIONES S.A. ESP, C
 11664        1127        183     427  Techtel LMDS Comunicaciones Interactiva
  6147        1112        370      22  Telefonica del Peru S.A.A., PE
 26615        1027       2501      49  TIM SA, BR

Complete listing at https://thyme.apnic.net/current/data-ASnet-LACNIC

AfriNIC Region per AS prefix count summary
------------------------------------------

   ASN  No of nets  /20 equiv  MaxAgg  Description
 24863        1593        393      19  LINKdotNET-AS, EG
 24835        1457        497      26  RAYA-AS, EG
 36992        1357       1518     281  ETISALAT-MISR, EG
 36903        1242        550      99  MT-MPLS, MA
 29571        1045         67      45  ORANGE-COTE-IVOIRE, CI
 36935         780        520      36  Vodafone-, EG
  6713         550       1861      34  IAM-AS, MA
 15399         535         55      52  WANANCHI-, KE
 37342         485         32       1  MOVITEL, MZ
 24757         480         73       5  EthioNet-AS, ET

Complete listing at https://thyme.apnic.net/current/data-ASnet-AFRINIC

Global Per AS prefix count summary
----------------------------------

   ASN  No of nets  /20 equiv  MaxAgg  Description
  8151       11767       3367     596  UNINET, MX
  9808        9489       8729      41  CHINAMOBILE-CN China Mobile Communicati
 16509        9060      10989    3267  AMAZON-02, US
 12479        7359       1713     145  UNI2-AS, ES
  7545        5727        785     689  TPG-INTERNET-AP TPG Telecom Limited, AU
 39891        4897        290      61  ALJAWWALSTC-AS, SA
  4538        4864       4192      75  ERX-CERNET-BKB China Education and Rese
 11492        4512        299     673  CABLEONE, US
 18403        4337        347      25  FPT-AS-AP FPT Telecom Company, VN
  7155        4179        288     101  VIASAT-SP-BACKBONE, US

Complete listing at https://thyme.apnic.net/current/data-ASnet

Global Per AS Maximum Aggregation summary
-----------------------------------------

   ASN  No of nets  Net Savings  Description
  9808        9489         9448  CHINAMOBILE-CN China Mobile Communications Grou
 12479        7359         7214  UNI2-AS, ES
 16509        9060         5793  AMAZON-02, US
  7545        5727         5038  TPG-INTERNET-AP TPG Telecom Limited, AU
 39891        4897         4836  ALJAWWALSTC-AS, SA
  4538        4864         4789  ERX-CERNET-BKB China Education and Research Net
 18403        4337         4312  FPT-AS-AP FPT Telecom Company, VN
  7155        4179         4078  VIASAT-SP-BACKBONE, US
 20940        4076         3923  AKAMAI-ASN1, NL
 11492        4512         3839  CABLEONE, US

Complete listing at https://thyme.apnic.net/current/data-CIDRnet

List of Unregistered Origin ASNs (Global)
-----------------------------------------

    Bad AS  Designation  Net Originated      Transit AS  Transit AS Name
     33492  UNALLOCATED  8.6.184.0/23             33650  COMCAST-33650, US
     33123  UNALLOCATED  8.10.69.0/24             11168  SCC, US
     12169  UNALLOCATED  8.15.207.0/24            32787  PROLEXIC-TECHNOLOGIES-DDOS-M
     40493  UNALLOCATED  8.17.26.0/24              3356  LEVEL3, US
     53775  UNALLOCATED  8.20.88.0/24              7029  WINDSTREAM, US
     62828  UNALLOCATED  8.21.130.0/24             3356  LEVEL3, US
    393266  UNALLOCATED  8.23.52.0/24             46887  LIGHTOWER, US
    396894  UNALLOCATED  8.28.201.0/24            46887  LIGHTOWER, US
    394936  UNALLOCATED  8.33.224.0/24            22442  HOU-PHONOSCOPE, US
     54338  UNALLOCATED  8.33.241.0/24             6461  ZAYO-6461, US

Complete listing at https://thyme.apnic.net/current/data-badAS

Prefixes from the Special Purpose Address Registry (Global)
-----------------------------------------------------------

Prefix                Origin AS  Description
192.88.99.0/24             6939  HURRICANE, US

Complete listing at https://thyme.apnic.net/current/data-spar

Advertised Unallocated Addresses
--------------------------------

Unassigned Network     ASN Information  AS Name
23.140.216.0/24      Origin:     27176  DATAWAGON, US
23.140.216.0/24     Transit:     20278  NEXEON, US
23.141.0.0/24        Origin:    395350  RESERVED, ZZ
23.141.0.0/24       Transit:     11426  TWC-11426-CAROLINAS, US
23.176.160.0/24      Origin:    397327  RESERVED, ZZ
23.176.160.0/24     Transit:     19108  SUDDENLINK-COMMUNICATIONS, US
23.178.240.0/24      Origin:    399517  RESERVED, ZZ
23.178.240.0/24     Transit:     32425  SKB3-ARIN-BGP, US
23.189.192.0/24      Origin:     27593  RESERVED, ZZ
23.189.192.0/24     Transit:       174  COGENT-174, US

Complete listing at https://thyme.apnic.net/current/data-add-IANA

Number of prefixes announced per prefix length (Global)
-------------------------------------------------------

 /1:0        /2:0        /3:0        /4:0        /5:0        /6:0       
 /7:0        /8:16       /9:14      /10:39      /11:102     /12:298     
/13:578     /14:1197    /15:2069    /16:13519   /17:8281    /18:13864   
/19:25134   /20:44418   /21:51170   /22:110066  /23:99070   /24:557155  
/25:741     /26:0       /27:0       /28:0       /29:0       /30:0       
/31:0       /32:0       

Advertised prefixes smaller than registry allocations
-----------------------------------------------------

   ASN  No of nets  Total ann.  Description
 12479        6445        7359  UNI2-AS, ES
  8151        5800       11767  UNINET, MX
 39891        3632        4897  ALJAWWALSTC-AS, SA
 11492        3424        4512  CABLEONE, US
  6327        3346        3536  SHAW, CA
  7155        3124        4179  VIASAT-SP-BACKBONE, US
  8551        2924        3456  BEZEQ-INTERNATIONAL-AS Bezeqint Internet Backbo
 22773        2598        3551  ASN-CXA-ALL-CCI-22773-RDC, US
 30036        2147        2487  MEDIACOM-ENTERPRISE-BUSINESS, US
 10620        2101        3538  Telmex Colombia S.A., CO

Complete listing at https://thyme.apnic.net/current/data-sXXas-nos

Number of /24s announced per /8 block (Global)
----------------------------------------------

   1:2256      2:1394      3:258       4:5         5:4558      6:136    
   7:6         8:1544      9:1        11:172      12:1511     13:376    
  14:2319     15:304      16:195      17:370      18:637      20:282    
  21:4        22:188      23:6373     24:2500     25:6        27:2503   
  29:19       31:2520     32:80       34:25       35:117      36:1989   
  37:4531     38:5200     39:870      40:146      41:4009     42:2107   
  43:2294     44:320      45:16492    46:4306     47:378      49:1817   
  50:1884     51:596      52:1598     54:394      55:956      56:8      
  57:122      58:1868     59:1174     60:1001     61:2513     62:2682   
  63:1914     64:5643     65:2337     66:4913     67:3032     68:1342   
  69:4140     70:1195     71:658      72:2958     74:2603     75:1562   
  76:622      77:2324     78:1836     79:2991     80:2113     81:1835   
  82:1462     83:1288     84:1549     85:3010     86:766      87:1995   
  88:1170     89:3851     90:618      91:7825     92:2062     93:2624   
  94:3514     95:4015     96:1297     97:321      98:1083     99:735    
 100:90      101:1077    102:2862    103:31987   104:4604    105:555    
 106:896     107:2680    108:1124    109:4221    110:2132    111:3180   
 112:2067    113:1817    114:1665    115:1975    116:1906    117:2431   
 118:2688    119:1986    120:1796    121:1160    122:2597    123:2192   
 124:1624    125:2550    128:1476    129:925     130:1038    131:1948   
 132:814     133:408     134:1795    135:306     136:911     137:969    
 138:2632    139:1574    140:1164    141:1294    142:1512    143:1495   
 144:993     145:346     146:1943    147:1606    148:2453    149:2263   
 150:869     151:1232    152:1871    153:523     154:4919    155:1378   
 156:1955    157:1321    158:1084    159:2248    160:2598    161:1584   
 162:3533    163:1593    164:1702    165:1838    166:1065    167:1723   
 168:3728    169:909     170:4650    171:865     172:3705    173:2957   
 174:981     175:1184    176:3777    177:4419    178:3542    179:2128   
 180:2447    181:3549    182:3358    183:1991    184:2279    185:20518  
 186:4693    187:4149    188:4166    189:3796    190:9195    191:1450   
 192:10956   193:8953    194:7257    195:5215    196:3085    197:2471   
 198:6001    199:6103    200:7945    201:6030    202:10539   203:10000  
 204:4552    205:3675    206:4362    207:3485    208:4153    209:4923   
 210:4482    211:2532    212:4223    213:3401    214:1094    215:58     
 216:6689    217:2779    218:1285    219:575     220:2032    221:978    
 222:844     223:2162   

End of report


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