[lacnog] Weekly Global IPv4 Routing Table Report

Routing Table Analysis Role Account cscora en apnic.net
Vie Feb 3 15:03:01 -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
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 04 Feb, 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:                              919404
    Prefixes after maximum aggregation (per Origin AS):          347822
    Deaggregation factor:                                          2.64
    Unique aggregates announced (without unneeded subnets):      445727
Total ASes present in the Internet Routing Table:                 74078
    Prefixes per ASN:                                             12.41
Origin-only ASes present in the Internet Routing Table:           63572
Origin ASes announcing only one prefix:                           26134
Transit ASes present in the Internet Routing Table:               10506
Transit-only ASes present in the Internet Routing Table:            438
Average AS path length visible in the Internet Routing Table:       4.2
    Max AS path length visible:                                      55
    Max AS path prepend of ASN (265020)                              50
Prefixes from unregistered ASNs in the Routing Table:               951
    Number of instances of unregistered ASNs:                       961
Number of 32-bit ASNs allocated by the RIRs:                      41183
Number of 32-bit ASNs visible in the Routing Table:               34103
Prefixes from 32-bit ASNs in the Routing Table:                  166598
Number of bogon 32-bit ASNs visible in the Routing Table:            31
Special use prefixes present in the Routing Table:                    1
Prefixes being announced from unallocated address space:            521
Number of addresses announced to Internet:                   3062699648
    Equivalent to 182 /8s, 141 /16s and 22 /24s
    Percentage of available address space announced:               82.7
    Percentage of allocated address space announced:               82.7
    Percentage of available address space allocated:              100.0
    Percentage of address space in use by end-sites:               99.6
Total number of prefixes smaller than registry allocations:      312179

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

Prefixes being announced by APNIC Region ASes:                   240580
    Total APNIC prefixes after maximum aggregation:               68793
    APNIC Deaggregation factor:                                    3.50
Prefixes being announced from the APNIC address blocks:          235600
    Unique aggregates announced from the APNIC address blocks:    97865
APNIC Region origin ASes present in the Internet Routing Table:   13261
    APNIC Prefixes per ASN:                                       17.77
APNIC Region origin ASes announcing only one prefix:               3847
APNIC Region transit ASes present in the Internet Routing Table:   1771
Average APNIC Region AS path length visible:                        4.4
    Max APNIC Region AS path length visible:                         26
Number of APNIC region 32-bit ASNs visible in the Routing Table:   8531
Number of APNIC addresses announced to Internet:              773543680
    Equivalent to 46 /8s, 27 /16s and 87 /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, 131072-151865
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:                    267075
    Total ARIN prefixes after maximum aggregation:               121357
    ARIN Deaggregation factor:                                     2.20
Prefixes being announced from the ARIN address blocks:           269014
    Unique aggregates announced from the ARIN address blocks:    130096
ARIN Region origin ASes present in the Internet Routing Table:    19068
    ARIN Prefixes per ASN:                                        14.11
ARIN Region origin ASes announcing only one prefix:                6982
ARIN Region transit ASes present in the Internet Routing Table:    1956
Average ARIN Region AS path length visible:                         3.7
    Max ARIN Region AS path length visible:                          35
Number of ARIN region 32-bit ASNs visible in the Routing Table:    4736
Number of ARIN addresses announced to Internet:              1286223616
    Equivalent to 76 /8s, 170 /16s and 55 /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:                    264437
    Total RIPE prefixes after maximum aggregation:               122675
    RIPE Deaggregation factor:                                     2.16
Prefixes being announced from the RIPE address blocks:           260933
    Unique aggregates announced from the RIPE address blocks:    156189
RIPE Region origin ASes present in the Internet Routing Table:    28215
    RIPE Prefixes per ASN:                                         9.25
RIPE Region origin ASes announcing only one prefix:               12037
RIPE Region transit ASes present in the Internet Routing Table:    3969
Average RIPE Region AS path length visible:                         4.2
    Max RIPE Region AS path length visible:                          34
Number of RIPE region 32-bit ASNs visible in the Routing Table:   10996
Number of RIPE addresses announced to Internet:               718364800
    Equivalent to 42 /8s, 209 /16s and 96 /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
                       196608-213403
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:                  117476
    Total LACNIC prefixes after maximum aggregation:              28532
    LACNIC Deaggregation factor:                                   4.12
Prefixes being announced from the LACNIC address blocks:         116671
    Unique aggregates announced from the LACNIC address blocks:   49129
LACNIC Region origin ASes present in the Internet Routing Table:  11000
    LACNIC Prefixes per ASN:                                      10.61
LACNIC Region origin ASes announcing only one prefix:              2663
LACNIC Region transit ASes present in the Internet Routing Table:  2281
Average LACNIC Region AS path length visible:                       4.9
    Max LACNIC Region AS path length visible:                        55
Number of LACNIC region 32-bit ASNs visible in the Routing Table:  8776
Number of LACNIC addresses announced to Internet:             176175616
    Equivalent to 10 /8s, 128 /16s and 58 /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:                  28885
    Total AfriNIC prefixes after maximum aggregation:              5731
    AfriNIC Deaggregation factor:                                  5.04
Prefixes being announced from the AfriNIC address blocks:         36665
    Unique aggregates announced from the AfriNIC address blocks:  12023
AfriNIC Region origin ASes present in the Internet Routing Table:  1718
    AfriNIC Prefixes per ASN:                                     21.34
AfriNIC Region origin ASes announcing only one prefix:              605
AfriNIC Region transit ASes present in the Internet Routing Table:  331
Average AfriNIC Region AS path length visible:                      5.0
    Max AfriNIC Region AS path length visible:                       31
Number of AfriNIC region 32-bit ASNs visible in the Routing Table: 1064
Number of AfriNIC addresses announced to Internet:            108071936
    Equivalent to 6 /8s, 113 /16s and 12 /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        9448       8884      50  CHINAMOBILE-CN China Mobile Communicati
  7545        5875        786     703  TPG-INTERNET-AP TPG Telecom Limited, AU
  4538        4859       4192      75  ERX-CERNET-BKB China Education and Rese
  7552        3636       1331      21  VIETEL-AS-AP Viettel Group, VN
  7713        3504       1043      65  TELKOMNET-AS-AP PT Telekomunikasi Indon
 45899        3376       1874      96  VNPT-AS-VN VNPT Corp, VN
  9498        2721        499     238  BBIL-AP BHARTI Airtel Ltd., IN
  4766        2528      11251     592  KIXS-AS-KR Korea Telecom, KR
 24560        2363        847     437  AIRTELBROADBAND-AS-AP Bharti Airtel Ltd
 45090        2184       1438      79  TENCENT-NET-AP Shenzhen Tencent Compute

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        7880      10722    2910  AMAZON-02, US
 11492        4532        300     602  CABLEONE, US
  7155        3899        265      33  VIASAT-SP-BACKBONE, US
 22773        3663       3064     295  ASN-CXA-ALL-CCI-22773-RDC, US
  6327        3502       1320      63  SHAW, CA
 16625        3307       1672    2421  AKAMAI-AS, US
   749        3036      50571    2303  DNIC-AS-00749, US
  7018        2590      24128    1572  ATT-INTERNET4, US
396982        2589       3496     365  GOOGLE-CLOUD-PLATFORM, US
 30036        2567        367     356  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        6985       1706     146  UNI2-AS, ES
  9121        6106       1692      17  TTNET, TR
 39891        4561        269      58  ALJAWWALSTC-AS, SA
 20940        4028       3399     177  AKAMAI-ASN1, NL
  8551        3895        370      37  BEZEQ-INTERNATIONAL-AS Bezeqint Interne
 12389        2941       2290     908  ROSTELECOM-AS, RU
 47331        2782        409    2090  TTNET, TR
  9009        2695        256    1369  M247, RO
 34984        2259        359     608  TELLCOM-AS, TR
  6849        2197        339      19  UKRTELNET, UA

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       11072       3346     588  Uninet S.A. de C.V., MX
 10620        3479        508     859  Telmex Colombia S.A., CO
 11830        2262        369      64  Instituto Costarricense de Electricidad
 13999        2237        371     602  Mega Cable, S.A. de C.V., MX
 28573        1353       2328     263  Claro NXT Telecomunicacoes Ltda, BR
  6503        1297        339     517  Axtel, S.A.B. de C.V., MX
  3816        1290        742     155  COLOMBIA TELECOMUNICACIONES S.A. ESP, C
  6147        1151        369      22  Telefonica del Peru S.A.A., PE
 11664        1108        181     460  Techtel LMDS Comunicaciones Interactiva
 26615        1018       2466      43  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
 24835        1539        533      30  RAYA-AS, EG
 24863        1501        393      21  LINKdotNET-AS, EG
 36992        1347       1517     277  ETISALAT-MISR, EG
 36903        1242        550      99  MT-MPLS, MA
 29571         996         67      53  ORANGE-COTE-IVOIRE, CI
 36935         884        520      42  Vodafone-, EG
  6713         548       1861      34  IAM-AS, MA
 15399         526         54      46  WANANCHI-, KE
 37342         494         32       1  MOVITEL, MZ
 24757         491         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       11072       3346     588  Uninet S.A. de C.V., MX
  9808        9448       8884      50  CHINAMOBILE-CN China Mobile Communicati
 16509        7880      10722    2910  AMAZON-02, US
 12479        6985       1706     146  UNI2-AS, ES
  9121        6106       1692      17  TTNET, TR
  7545        5875        786     703  TPG-INTERNET-AP TPG Telecom Limited, AU
  4538        4859       4192      75  ERX-CERNET-BKB China Education and Rese
 39891        4561        269      58  ALJAWWALSTC-AS, SA
 11492        4532        300     602  CABLEONE, US
 20940        4028       3399     177  AKAMAI-ASN1, NL

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

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

   ASN  No of nets  Net Savings  Description
  9808        9448         9398  CHINAMOBILE-CN China Mobile Communications Grou
 12479        6985         6839  UNI2-AS, ES
  9121        6106         6089  TTNET, TR
  7545        5875         5172  TPG-INTERNET-AP TPG Telecom Limited, AU
 16509        7880         4970  AMAZON-02, US
  4538        4859         4784  ERX-CERNET-BKB China Education and Research Net
 39891        4561         4503  ALJAWWALSTC-AS, SA
 11492        4532         3930  CABLEONE, US
  7155        3899         3866  VIASAT-SP-BACKBONE, US
  8551        3895         3858  BEZEQ-INTERNATIONAL-AS Bezeqint Internet Backbo

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
    398083  UNALLOCATED  5.133.124.0/24          399587  UT, US
     33123  UNALLOCATED  8.10.69.0/24             11168  SCC, US
     16641  UNALLOCATED  8.10.194.0/24             3356  LEVEL3, US
     16641  UNALLOCATED  8.10.210.0/24             3356  LEVEL3, US
     25674  UNALLOCATED  8.12.76.0/24              3356  LEVEL3, US
     16641  UNALLOCATED  8.12.250.0/24             3356  LEVEL3, US
     25674  UNALLOCATED  8.14.115.0/24             3356  LEVEL3, US
     12169  UNALLOCATED  8.15.207.0/24            32787  PROLEXIC-TECHNOLOGIES-DDOS-M
     25674  UNALLOCATED  8.19.146.0/24             3356  LEVEL3, US
     53775  UNALLOCATED  8.20.88.0/24              7029  WINDSTREAM, 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
23.131.185.0/24      Origin:       174  COGENT-174, US
23.131.185.0/24     Transit:      2516  KDDI KDDI CORPORATION, JP
23.131.186.0/24      Origin:       174  COGENT-174, US
23.131.186.0/24     Transit:      2516  KDDI KDDI CORPORATION, JP
23.131.187.0/24      Origin:       174  COGENT-174, US
23.131.187.0/24     Transit:      2516  KDDI KDDI CORPORATION, JP
23.131.188.0/24      Origin:       174  COGENT-174, US
23.131.188.0/24     Transit:      2516  KDDI KDDI CORPORATION, JP
23.136.112.0/24      Origin:     54835  UNASSIGNED
23.136.112.0/24     Transit:     21559  OSNET, PR

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       /9:13      /10:39      /11:101     /12:295     
/13:580     /14:1199    /15:2038    /16:13481   /17:8308    /18:13910   
/19:25169   /20:44262   /21:52300   /22:110175  /23:98335   /24:548376  
/25:807     /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        6048        6985  UNI2-AS, ES
  9121        5285        6106  TTNET, TR
  8151        5079       11072  Uninet S.A. de C.V., MX
 39891        3552        4561  ALJAWWALSTC-AS, SA
 11492        3447        4532  CABLEONE, US
  8551        3367        3895  BEZEQ-INTERNATIONAL-AS Bezeqint Internet Backbo
  6327        3310        3502  SHAW, CA
  7155        2988        3899  VIASAT-SP-BACKBONE, US
 22773        2706        3663  ASN-CXA-ALL-CCI-22773-RDC, US
 47331        2403        2782  TTNET, TR

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

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

   1:1642      2:1233      3:168       4:5         5:4247      6:114    
   7:5         8:1554      9:1        11:172      12:1588     13:375    
  14:2358     15:290      16:79       17:367      18:395      20:243    
  21:4        22:188      23:6060     24:2497     25:4        27:2643   
  29:19       31:2500     32:106      34:9        35:107      36:1887   
  37:4589     38:4087     39:836      40:154      41:3939     42:1061   
  43:2332     44:302      45:16418    46:4128     47:382      49:1748   
  50:1835     51:382      52:1551     54:395      55:857      56:8      
  57:79       58:1745     59:1165     60:993      61:2428     62:2624   
  63:1933     64:5661     65:2317     66:4916     67:3045     68:1349   
  69:4154     70:1254     71:660      72:2970     74:2599     75:1457   
  76:599      77:2400     78:3942     79:3173     80:2070     81:1854   
  82:1480     83:1239     84:1521     85:3767     86:752      87:1950   
  88:2887     89:3565     90:594      91:7643     92:2005     93:2597   
  94:3527     95:4863     96:1328     97:346      98:1159     99:740    
 100:75      101:1067    102:2545    103:30899   104:4573    105:484    
 106:848     107:2513    108:920     109:4381    110:2081    111:3337   
 112:2044    113:1546    114:1615    115:2037    116:1906    117:2553   
 118:2289    119:1907    120:1770    121:1119    122:2596    123:2148   
 124:1605    125:2360    128:1303    129:1058    130:981     131:1988   
 132:802     133:406     134:1910    135:297     136:865     137:925    
 138:2560    139:1550    140:1183    141:1469    142:1426    143:1497   
 144:1197    145:351     146:1879    147:1556    148:2296    149:1890   
 150:869     151:1139    152:1830    153:480     154:3933    155:1400   
 156:1668    157:1293    158:1016    159:2268    160:2541    161:1421   
 162:3519    163:1490    164:1618    165:1653    166:838     167:1733   
 168:3890    169:916     170:4571    171:883     172:3505    173:2962   
 174:1025    175:1168    176:3689    177:4597    178:3556    179:2141   
 180:2365    181:3387    182:3277    183:1933    184:2338    185:19999  
 186:4666    187:3923    188:4086    189:3491    190:9112    191:1437   
 192:10954   193:8817    194:7240    195:5122    196:3009    197:2405   
 198:5953    199:6105    200:7740    201:5859    202:10635   203:10033  
 204:4601    205:3523    206:3865    207:3412    208:4081    209:4821   
 210:4436    211:2498    212:4105    213:3554    214:1096    215:56     
 216:6596    217:2647    218:1278    219:567     220:2026    221:969    
 222:844     223:2082   

End of report


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