[SANOG] Weekly Global IPv4 Routing Table Report
Routing Table Analysis Role Account
cscora at apnic.net
Fri Mar 10 18:03:35 UTC 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 at lists.apnic.net.
For historical data, please see https://thyme.apnic.net.
If you have any comments please contact Philip Smith <pfsinoz at gmail.com>.
IPv4 Routing Table Report 04:00 +10GMT Sat 11 Mar, 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: 915007
Prefixes after maximum aggregation (per Origin AS): 347222
Deaggregation factor: 2.64
Unique aggregates announced (without unneeded subnets): 446319
Total ASes present in the Internet Routing Table: 74206
Prefixes per ASN: 12.33
Origin-only ASes present in the Internet Routing Table: 63674
Origin ASes announcing only one prefix: 26136
Transit ASes present in the Internet Routing Table: 10532
Transit-only ASes present in the Internet Routing Table: 450
Average AS path length visible in the Internet Routing Table: 4.3
Max AS path length visible: 55
Max AS path prepend of ASN (265020) 50
Prefixes from unregistered ASNs in the Routing Table: 1094
Number of instances of unregistered ASNs: 1110
Number of 32-bit ASNs allocated by the RIRs: 41406
Number of 32-bit ASNs visible in the Routing Table: 34306
Prefixes from 32-bit ASNs in the Routing Table: 168053
Number of bogon 32-bit ASNs visible in the Routing Table: 49
Special use prefixes present in the Routing Table: 1
Prefixes being announced from unallocated address space: 540
Number of addresses announced to Internet: 3063655424
Equivalent to 182 /8s, 155 /16s and 172 /24s
Percentage of available address space announced: 82.8
Percentage of allocated address space announced: 82.8
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: 306150
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 241976
Total APNIC prefixes after maximum aggregation: 69078
APNIC Deaggregation factor: 3.50
Prefixes being announced from the APNIC address blocks: 236589
Unique aggregates announced from the APNIC address blocks: 97821
APNIC Region origin ASes present in the Internet Routing Table: 13346
APNIC Prefixes per ASN: 17.73
APNIC Region origin ASes announcing only one prefix: 3893
APNIC Region transit ASes present in the Internet Routing Table: 1790
Average APNIC Region AS path length visible: 4.5
Max APNIC Region AS path length visible: 26
Number of APNIC region 32-bit ASNs visible in the Routing Table: 8624
Number of APNIC addresses announced to Internet: 773734784
Equivalent to 46 /8s, 30 /16s and 65 /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: 267839
Total ARIN prefixes after maximum aggregation: 121700
ARIN Deaggregation factor: 2.20
Prefixes being announced from the ARIN address blocks: 269935
Unique aggregates announced from the ARIN address blocks: 130374
ARIN Region origin ASes present in the Internet Routing Table: 19066
ARIN Prefixes per ASN: 14.16
ARIN Region origin ASes announcing only one prefix: 6969
ARIN Region transit ASes present in the Internet Routing Table: 1958
Average ARIN Region AS path length visible: 3.7
Max ARIN Region AS path length visible: 36
Number of ARIN region 32-bit ASNs visible in the Routing Table: 4755
Number of ARIN addresses announced to Internet: 1286731520
Equivalent to 76 /8s, 177 /16s and 247 /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: 257352
Total RIPE prefixes after maximum aggregation: 121375
RIPE Deaggregation factor: 2.12
Prefixes being announced from the RIPE address blocks: 253836
Unique aggregates announced from the RIPE address blocks: 156754
RIPE Region origin ASes present in the Internet Routing Table: 28239
RIPE Prefixes per ASN: 8.99
RIPE Region origin ASes announcing only one prefix: 12007
RIPE Region transit ASes present in the Internet Routing Table: 3949
Average RIPE Region AS path length visible: 4.3
Max RIPE Region AS path length visible: 38
Number of RIPE region 32-bit ASNs visible in the Routing Table: 11073
Number of RIPE addresses announced to Internet: 718252672
Equivalent to 42 /8s, 207 /16s and 170 /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: 117404
Total LACNIC prefixes after maximum aggregation: 28499
LACNIC Deaggregation factor: 4.12
Prefixes being announced from the LACNIC address blocks: 116794
Unique aggregates announced from the LACNIC address blocks: 48887
LACNIC Region origin ASes present in the Internet Routing Table: 10986
LACNIC Prefixes per ASN: 10.63
LACNIC Region origin ASes announcing only one prefix: 2672
LACNIC Region transit ASes present in the Internet Routing Table: 2278
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: 8784
Number of LACNIC addresses announced to Internet: 176436224
Equivalent to 10 /8s, 132 /16s and 52 /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: 29342
Total AfriNIC prefixes after maximum aggregation: 5781
AfriNIC Deaggregation factor: 5.08
Prefixes being announced from the AfriNIC address blocks: 37313
Unique aggregates announced from the AfriNIC address blocks: 12056
AfriNIC Region origin ASes present in the Internet Routing Table: 1724
AfriNIC Prefixes per ASN: 21.64
AfriNIC Region origin ASes announcing only one prefix: 595
AfriNIC Region transit ASes present in the Internet Routing Table: 337
Average AfriNIC Region AS path length visible: 4.9
Max AfriNIC Region AS path length visible: 30
Number of AfriNIC region 32-bit ASNs visible in the Routing Table: 1070
Number of AfriNIC addresses announced to Internet: 108099840
Equivalent to 6 /8s, 113 /16s and 121 /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 9462 8884 51 CHINAMOBILE-CN China Mobile Communicati
7545 5770 786 691 TPG-INTERNET-AP TPG Telecom Limited, AU
4538 4862 4192 75 ERX-CERNET-BKB China Education and Rese
7552 3675 1331 21 VIETEL-AS-AP Viettel Group, VN
7713 3533 1043 65 TELKOMNET-AS-AP PT Telekomunikasi Indon
45899 3368 1874 95 VNPT-AS-VN VNPT Corp, VN
9498 2818 499 238 BBIL-AP BHARTI Airtel Ltd., IN
4766 2551 11251 591 KIXS-AS-KR Korea Telecom, KR
24560 2359 834 441 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 8051 10754 2882 AMAZON-02, US
11492 4529 300 616 CABLEONE, US
7155 3959 270 44 VIASAT-SP-BACKBONE, US
22773 3650 3064 297 ASN-CXA-ALL-CCI-22773-RDC, US
6327 3505 1320 64 SHAW, CA
16625 3190 1601 2359 AKAMAI-AS, US
749 3037 50520 2304 DNIC-AS-00749, US
396982 2622 3586 356 GOOGLE-CLOUD-PLATFORM, US
7018 2559 24119 1565 ATT-INTERNET4, US
30036 2521 362 445 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 7064 1705 149 UNI2-AS, ES
39891 4561 269 58 ALJAWWALSTC-AS, SA
20940 4039 3399 171 AKAMAI-ASN1, NL
8551 3895 370 37 BEZEQ-INTERNATIONAL-AS Bezeqint Interne
12389 2950 2292 911 ROSTELECOM-AS, RU
9009 2638 250 1382 M247, RO
34984 2266 359 609 TELLCOM-AS, TR
6849 2163 339 19 UKRTELNET, UA
58224 1847 949 546 TCI, IR
13188 1607 100 27 TRIOLAN, 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 11136 3329 593 Uninet S.A. de C.V., MX
10620 3466 504 879 Telmex Colombia S.A., CO
13999 2281 372 608 Mega Cable, S.A. de C.V., MX
11830 2264 369 64 Instituto Costarricense de Electricidad
28573 1365 2325 254 Claro NXT Telecomunicacoes Ltda, BR
3816 1301 763 161 COLOMBIA TELECOMUNICACIONES S.A. ESP, C
6503 1298 339 513 Axtel, S.A.B. de C.V., MX
6147 1130 370 22 Telefonica del Peru S.A.A., PE
11664 1097 180 461 Techtel LMDS Comunicaciones Interactiva
26615 1029 2498 45 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 1556 393 19 LINKdotNET-AS, EG
24835 1542 533 30 RAYA-AS, EG
36992 1343 1518 275 ETISALAT-MISR, EG
36903 1242 550 99 MT-MPLS, MA
29571 1013 67 53 ORANGE-COTE-IVOIRE, CI
36935 868 520 42 Vodafone-, EG
6713 550 1861 34 IAM-AS, MA
15399 528 54 47 WANANCHI-, KE
24757 496 73 5 EthioNet-AS, ET
37342 493 32 1 MOVITEL, MZ
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 11136 3329 593 Uninet S.A. de C.V., MX
9808 9462 8884 51 CHINAMOBILE-CN China Mobile Communicati
16509 8051 10754 2882 AMAZON-02, US
12479 7064 1705 149 UNI2-AS, ES
7545 5770 786 691 TPG-INTERNET-AP TPG Telecom Limited, AU
4538 4862 4192 75 ERX-CERNET-BKB China Education and Rese
39891 4561 269 58 ALJAWWALSTC-AS, SA
11492 4529 300 616 CABLEONE, US
20940 4039 3399 171 AKAMAI-ASN1, NL
7155 3959 270 44 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 9462 9411 CHINAMOBILE-CN China Mobile Communications Grou
12479 7064 6915 UNI2-AS, ES
16509 8051 5169 AMAZON-02, US
7545 5770 5079 TPG-INTERNET-AP TPG Telecom Limited, AU
4538 4862 4787 ERX-CERNET-BKB China Education and Research Net
39891 4561 4503 ALJAWWALSTC-AS, SA
7155 3959 3915 VIASAT-SP-BACKBONE, US
11492 4529 3913 CABLEONE, US
20940 4039 3868 AKAMAI-ASN1, NL
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
33123 UNALLOCATED 8.10.69.0/24 11168 SCC, US
12169 UNALLOCATED 8.15.207.0/24 32787 PROLEXIC-TECHNOLOGIES-DDOS-M
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
18798 UNALLOCATED 8.40.106.0/24 6461 ZAYO-6461, US
394856 UNALLOCATED 8.40.216.0/24 3356 LEVEL3, 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 /11:103 /12:299
/13:579 /14:1201 /15:2041 /16:13485 /17:8277 /18:13832
/19:25209 /20:44307 /21:51700 /22:109721 /23:97586 /24:545777
/25:822 /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 6122 7064 UNI2-AS, ES
8151 5125 11136 Uninet S.A. de C.V., MX
39891 3552 4561 ALJAWWALSTC-AS, SA
11492 3437 4529 CABLEONE, US
8551 3367 3895 BEZEQ-INTERNATIONAL-AS Bezeqint Internet Backbo
6327 3313 3505 SHAW, CA
7155 3036 3959 VIASAT-SP-BACKBONE, US
22773 2697 3650 ASN-CXA-ALL-CCI-22773-RDC, US
30036 2178 2521 MEDIACOM-ENTERPRISE-BUSINESS, US
10620 2020 3466 Telmex Colombia S.A., CO
Complete listing at https://thyme.apnic.net/current/data-sXXas-nos
Number of /24s announced per /8 block (Global)
----------------------------------------------
1:1700 2:1231 3:168 4:5 5:4343 6:118
7:6 8:1554 9:1 11:172 12:1579 13:391
14:2327 15:293 16:111 17:369 18:398 20:249
21:4 22:188 23:6131 24:2494 25:4 27:2502
29:19 31:2505 32:110 34:8 35:106 36:1913
37:4621 38:4349 39:806 40:151 41:4016 42:949
43:2335 44:308 45:16413 46:4187 47:382 49:1749
50:1834 51:378 52:1588 54:389 55:869 56:8
57:89 58:1741 59:1126 60:974 61:2435 62:2641
63:1937 64:5652 65:2324 66:4934 67:3002 68:1354
69:4133 70:1269 71:665 72:2974 74:2598 75:1459
76:605 77:2423 78:1853 79:3168 80:2058 81:1738
82:1509 83:1234 84:1528 85:3009 86:756 87:1954
88:1243 89:3595 90:611 91:7650 92:2014 93:2575
94:3542 95:3956 96:1326 97:331 98:1161 99:747
100:77 101:1062 102:2644 103:31031 104:4591 105:483
106:911 107:2546 108:937 109:4395 110:2071 111:3289
112:2046 113:1558 114:1625 115:2042 116:1929 117:2563
118:2274 119:1970 120:1772 121:1115 122:2598 123:2184
124:1617 125:2455 128:1316 129:1074 130:1001 131:2006
132:793 133:421 134:1906 135:299 136:867 137:933
138:2541 139:1555 140:1195 141:1471 142:1432 143:1475
144:1209 145:356 146:1911 147:1565 148:2309 149:1929
150:876 151:1142 152:1848 153:486 154:4248 155:1424
156:1679 157:1285 158:1052 159:2267 160:2550 161:1446
162:3539 163:1500 164:1594 165:1681 166:860 167:1721
168:3825 169:931 170:4582 171:900 172:3505 173:2950
174:1017 175:1162 176:3737 177:4583 178:3626 179:2185
180:2363 181:3413 182:3350 183:1935 184:2334 185:20121
186:4692 187:3936 188:4134 189:3581 190:9137 191:1481
192:10959 193:8830 194:7243 195:5134 196:3076 197:2389
198:5967 199:6098 200:7766 201:5854 202:10734 203:10191
204:4604 205:3535 206:3844 207:3453 208:4083 209:4873
210:4454 211:2499 212:4100 213:3548 214:1094 215:58
216:6602 217:2659 218:1288 219:580 220:2015 221:972
222:876 223:2148
End of report
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