IPv4 R&E Routing Table Report 23:05 GMT Thu 20 Nov, 2025 IPv4 BGP Table (Global) as seen at Singapore. Report Website: https://bgp.nsrc.org/REN Detailed Analysis: https://bgp.nsrc.org/REN/Singapore/ Analysis Summary ---------------- BGP routing table entries examined: 1011689 Prefixes after maximum aggregation (per Origin AS): 392263 Deaggregation factor: 2.58 Unique aggregates announced (without unneeded subnets): 502174 Number of IPv4 prefixes with a valid ROA: 588379 Number of IPv4 prefixes with an invalid ROA: 785 Number of IPv4 prefixes with no ROA: 422525 Total ASes present in the Internet Routing Table: 77458 Prefixes per ASN: 13.06 Origin-only ASes present in the Internet Routing Table: 66364 Origin ASes announcing only one prefix: 27049 Transit ASes present in the Internet Routing Table: 11094 Transit-only ASes present in the Internet Routing Table: 556 Paths with bogon ASNs present in the IPv4 Routing Table: 28 Average AS path length visible in the Internet Routing Table: 4.7 Max AS path length visible: 72 Max AS path prepend of ASN ( 37447) 66 Prefixes from unregistered ASNs in the Routing Table: 1044 Number of instances of unregistered ASNs: 1073 Number of 32-bit ASNs allocated by the RIRs: 48001 Number of 32-bit ASNs visible in the Routing Table: 39299 Prefixes from 32-bit ASNs in the Routing Table: 216276 Number of bogon 32-bit ASNs visible in the Routing Table: 76 Special use prefixes present in the Routing Table: 0 Prefixes being announced from unallocated address space: 487 Number of addresses announced to Internet: 3099567872 Equivalent to 184 /8s, 191 /16s and 167 /24s Percentage of available address space announced: 83.7 Percentage of allocated address space announced: 83.7 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: 331715 APNIC Region Analysis Summary ----------------------------- Prefixes being announced by APNIC Region ASes: 272089 Total APNIC prefixes after maximum aggregation: 80409 APNIC Deaggregation factor: 3.38 Prefixes being announced from the APNIC address blocks: 261197 Unique aggregates announced from the APNIC address blocks: 106179 APNIC Region origin ASes present in the Internet Routing Table: 14847 APNIC Prefixes per ASN: 17.59 APNIC Region origin ASes announcing only one prefix: 4493 APNIC Region transit ASes present in the Internet Routing Table: 2004 Average APNIC Region AS path length visible: 4.7 Max APNIC Region AS path length visible: 38 Number of APNIC region 32-bit ASNs visible in the Routing Table: 10431 Number of APNIC addresses announced to Internet: 751918848 Equivalent to 44 /8s, 209 /16s and 95 /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, 131072-155961 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: 296693 Total ARIN prefixes after maximum aggregation: 133680 ARIN Deaggregation factor: 2.22 Prefixes being announced from the ARIN address blocks: 296705 Unique aggregates announced from the ARIN address blocks: 145439 ARIN Region origin ASes present in the Internet Routing Table: 19347 ARIN Prefixes per ASN: 15.34 ARIN Region origin ASes announcing only one prefix: 7098 ARIN Region transit ASes present in the Internet Routing Table: 1930 Average ARIN Region AS path length visible: 4.3 Max ARIN Region AS path length visible: 28 Number of ARIN region 32-bit ASNs visible in the Routing Table: 5405 Number of ARIN addresses announced to Internet: 1338111744 Equivalent to 79 /8s, 193 /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, 393216-402332 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, 45/8, 47/8, 48/8, 50/8, 52/8, 54/8, 55/8, 56/8, 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: 281359 Total RIPE prefixes after maximum aggregation: 139883 RIPE Deaggregation factor: 2.01 Prefixes being announced from the RIPE address blocks: 281925 Unique aggregates announced from the RIPE address blocks: 183082 RIPE Region origin ASes present in the Internet Routing Table: 29091 RIPE Prefixes per ASN: 9.69 RIPE Region origin ASes announcing only one prefix: 12076 RIPE Region transit ASes present in the Internet Routing Table: 4039 Average RIPE Region AS path length visible: 4.9 Max RIPE Region AS path length visible: 45 Number of RIPE region 32-bit ASNs visible in the Routing Table: 12818 Number of RIPE addresses announced to Internet: 735449856 Equivalent to 43 /8s, 214 /16s and 19 /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, 53/8, 57/8, 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: 124863 Total LACNIC prefixes after maximum aggregation: 30724 LACNIC Deaggregation factor: 4.06 Prefixes being announced from the LACNIC address blocks: 120910 Unique aggregates announced from the LACNIC address blocks: 49541 LACNIC Region origin ASes present in the Internet Routing Table: 11291 LACNIC Prefixes per ASN: 10.71 LACNIC Region origin ASes announcing only one prefix: 2659 LACNIC Region transit ASes present in the Internet Routing Table: 2546 Average LACNIC Region AS path length visible: 5.3 Max LACNIC Region AS path length visible: 38 Number of LACNIC region 32-bit ASNs visible in the Routing Table: 9296 Number of LACNIC addresses announced to Internet: 170728704 Equivalent to 10 /8s, 45 /16s and 29 /24s LACNIC AS Blocks 26592-26623, 27648-28671, 52224-53247, 61440-61951, 64099-64197, 262144-274844 + 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: 35641 Total AfriNIC prefixes after maximum aggregation: 6873 AfriNIC Deaggregation factor: 5.19 Prefixes being announced from the AfriNIC address blocks: 50465 Unique aggregates announced from the AfriNIC address blocks: 17540 AfriNIC Region origin ASes present in the Internet Routing Table: 1987 AfriNIC Prefixes per ASN: 25.40 AfriNIC Region origin ASes announcing only one prefix: 723 AfriNIC Region transit ASes present in the Internet Routing Table: 378 Average AfriNIC Region AS path length visible: 5.3 Max AfriNIC Region AS path length visible: 72 Number of AfriNIC region 32-bit ASNs visible in the Routing Table: 1349 Number of AfriNIC addresses announced to Internet: 103110656 Equivalent to 6 /8s, 37 /16s and 88 /24s AfriNIC AS Blocks 36864-37887, 327680-329727 & ERX transfers AfriNIC Address Blocks 41/8, 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 13391 8730 117 CHINAMOBILE-CN China Mobile Communication 7545 6066 832 593 TPG-INTERNET-AP TPG Telecom Limited, AU 9498 4554 540 334 BBIL-AP BHARTI Airtel Ltd., IN 18403 4381 347 24 FPT-AS-AP FPT Telecom Company, VN 7552 3982 1332 28 VIETEL-AS-AP Viettel Group, VN 7713 3718 1044 66 TELKOMNET-AS-AP PT Telekomunikasi Indones 45899 3317 1869 99 VNPT-AS-VN VNPT Corp, VN 56046 3248 828 181 CMNET-JIANGSU-AP China Mobile communicati 24560 2931 856 507 AIRTELBROADBAND-AS-AP Bharti Airtel Ltd., 140292 2485 272 1919 CHINATELECOM-JIANGSU-SUZHOU-5G-NETWORK CH Complete listing at https://bgp.nsrc.org/REN/Singapore/data-ASnet-APNIC ARIN Region per AS prefix count summary --------------------------------------- ASN No of nets /20 equiv MaxAgg Description 16509 14167 37184 5371 AMAZON-02, US 11492 4789 317 804 CABLEONE, US 22773 4732 3097 365 ASN-CXA-ALL-CCI-22773-RDC, US 7155 3861 286 85 VIASAT-SP-BACKBONE, US 6327 3691 1320 83 SHAW, CA 396982 3301 4860 479 GOOGLE-CLOUD-PLATFORM, US 749 3217 54766 2468 DNIC-AS-00749, US 16625 2873 1229 2147 AKAMAI-AS, US 36352 2853 231 911 AS-COLOCROSSING, US 30036 2663 368 307 MEDIACOM-ENTERPRISE-BUSINESS, US Complete listing at https://bgp.nsrc.org/REN/Singapore/data-ASnet-ARIN RIPE Region per AS prefix count summary --------------------------------------- ASN No of nets /20 equiv MaxAgg Description 12479 7294 1711 149 UNI2-AS, ES 39891 4833 298 66 ALJAWWALSTC-AS, SA 9009 4022 381 2287 M247, RO 20940 3868 3394 124 AKAMAI-ASN1, NL 12389 3143 2317 870 ROSTELECOM-AS PJSC Rostelecom. Technical 212238 2503 177 1808 CDNEXT, GB 34984 2418 363 576 TELLCOM-AS, TR 8452 1699 1852 14 TE-AS TE-AS, EG 13188 1607 100 27 TRIOLAN, UA 203020 1486 169 856 HOSTROYALE, IN Complete listing at https://bgp.nsrc.org/REN/Singapore/data-ASnet-RIPE LACNIC Region per AS prefix count summary ----------------------------------------- ASN No of nets /20 equiv MaxAgg Description 8151 12565 3305 577 UNINET, MX 10620 3458 463 1101 Telmex Colombia S.A., CO 13999 2503 511 346 Mega Cable, S.A. de C.V., MX 11830 1992 369 65 Instituto Costarricense de Electricidad y 28573 1372 2433 261 Claro NXT Telecomunicacoes Ltda, BR 3816 1350 789 206 COLOMBIA TELECOMUNICACIONES S.A. ESP BIC, 6147 1264 371 22 Telefonica del Peru S.A.A., PE 22884 1056 67 363 TOTAL PLAY TELECOMUNICACIONES SA DE CV, M 26615 1016 2486 56 TIM SA, BR 18881 914 1127 31 TELEFONICA BRASIL S.A, BR Complete listing at https://bgp.nsrc.org/REN/Singapore/data-ASnet-LACNIC AfriNIC Region per AS prefix count summary ------------------------------------------ ASN No of nets /20 equiv MaxAgg Description 24835 1985 630 32 RAYA-AS, EG 36992 1680 1509 397 ETISALAT-MISR, EG 24863 1264 389 20 LINKdotNET-AS, EG 36903 1250 554 97 MT-MPLS, MA 36935 1104 523 34 Vodafone-, EG 37069 1086 1112 11 MOBINIL, EG 29571 1071 94 22 ORANGE-COTE-IVOIRE, CI 20011 580 154 212 NTT-DATA-Inc, ZA 36914 562 82 3 KENET-AS, KE 15399 554 57 56 WANANCHI-, KE Complete listing at https://bgp.nsrc.org/REN/Singapore/data-ASnet-AFRINIC Global Per AS prefix count summary ---------------------------------- ASN No of nets /20 equiv MaxAgg Description 16509 14167 37184 5371 AMAZON-02, US 9808 13391 8730 117 CHINAMOBILE-CN China Mobile Communication 8151 12565 3305 577 UNINET, MX 12479 7294 1711 149 UNI2-AS, ES 7545 6066 832 593 TPG-INTERNET-AP TPG Telecom Limited, AU 39891 4833 298 66 ALJAWWALSTC-AS, SA 11492 4789 317 804 CABLEONE, US 22773 4732 3097 365 ASN-CXA-ALL-CCI-22773-RDC, US 9498 4554 540 334 BBIL-AP BHARTI Airtel Ltd., IN 18403 4381 347 24 FPT-AS-AP FPT Telecom Company, VN Complete listing at https://bgp.nsrc.org/REN/Singapore/data-ASnet Global Per AS Maximum Aggregation summary ----------------------------------------- ASN No of nets Net Savings Description 9808 13391 13274 CHINAMOBILE-CN China Mobile Communications Grou 8151 12565 11988 UNINET, MX 12479 7294 7145 UNI2-AS, ES 7545 6066 5473 TPG-INTERNET-AP TPG Telecom Limited, AU 39891 4833 4767 ALJAWWALSTC-AS, SA 22773 4732 4367 ASN-CXA-ALL-CCI-22773-RDC, US 18403 4381 4357 FPT-AS-AP FPT Telecom Company, VN 9498 4554 4220 BBIL-AP BHARTI Airtel Ltd., IN 11492 4789 3985 CABLEONE, US 7552 3982 3954 VIETEL-AS-AP Viettel Group, VN Complete listing at https://bgp.nsrc.org/REN/Singapore/data-CIDRnet List of Unregistered Origin ASNs (Global) ----------------------------------------- Bad AS Designation Net Originated Transit AS Transit AS Name 53775 UNALLOCATED 8.20.88.0/24 3737 AS-PTD, US 393266 UNALLOCATED 8.23.52.0/24 46887 CROWNCASTLE-AS46887, US 396894 UNALLOCATED 8.28.201.0/24 3356 LEVEL3, US 394936 UNALLOCATED 8.33.224.0/24 22442 HOU-PHONOSCOPE, US 54338 UNALLOCATED 8.33.241.0/24 6461 ZAYO-6461, US 395195 UNALLOCATED 8.38.115.0/24 3356 LEVEL3, US 1782 UNALLOCATED 8.42.19.0/24 3356 LEVEL3, US 54739 UNALLOCATED 8.44.198.0/23 13335 CLOUDFLARENET, US 13342 UNALLOCATED 12.17.5.0/24 174 COGENT-174, US 26345 UNALLOCATED 12.21.93.0/24 40264 TWC-40264-WI-MN-UPPERMI Complete listing at https://bgp.nsrc.org/REN/Singapore/data-badAS Advertised Unallocated Addresses -------------------------------- Unassigned Network ASN Information AS Name 23.135.216.0/24 Origin: 400565 RESERVED, ZZ 23.135.216.0/24 Transit: 3356 LEVEL3, US 23.137.48.0/24 Origin: 16904 ARVIG-16904, US 23.137.48.0/24 Transit: 174 COGENT-174, US 23.137.200.0/24 Origin: 16276 OVH, FR 23.137.200.0/24 Transit: 174 COGENT-174, US 23.137.224.0/24 Origin: 29802 HVC-AS, US 23.137.224.0/24 Transit: 174 COGENT-174, US 23.137.225.0/24 Origin: 29802 HVC-AS, US 23.137.225.0/24 Transit: 174 COGENT-174, US Complete listing at https://bgp.nsrc.org/REN/Singapore/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 /10:41 /11:94 /12:297 /13:578 /14:1194 /15:2092 /16:13645 /17:8162 /18:13412 /19:24611 /20:44341 /21:51850 /22:112707 /23:104704 /24:633931 /25:0 /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 8151 6765 12565 UNINET, MX 12479 6236 7294 UNI2-AS, ES 11492 3602 4789 CABLEONE, US 39891 3521 4833 ALJAWWALSTC-AS, SA 6327 3478 3691 SHAW, CA 22773 3021 4732 ASN-CXA-ALL-CCI-22773-RDC, US 7155 2820 3861 VIASAT-SP-BACKBONE, US 16509 2431 14167 AMAZON-02, US 30036 2318 2663 MEDIACOM-ENTERPRISE-BUSINESS, US 10620 2213 3458 Telmex Colombia S.A., CO Complete listing at https://bgp.nsrc.org/REN/Singapore/data-sXXas-nos Number of /24s announced per /8 block (Global) ---------------------------------------------- 1:2434 2:1535 3:963 4:10 5:4976 6:189 7:6 8:1507 9:6 11:172 12:1235 13:559 14:2603 15:410 16:303 17:387 18:909 20:584 21:4 22:188 23:8066 24:2561 25:2 27:2780 29:19 31:3391 32:31 33:1 34:84 35:285 36:4551 37:4545 38:9315 39:1173 40:462 41:4429 42:1950 43:2865 44:399 45:19272 46:5087 47:374 49:2156 50:2048 51:593 52:1566 54:290 55:1101 56:11 57:287 58:2316 59:1323 60:1187 61:3027 62:3085 63:1732 64:5940 65:2114 66:5889 67:3240 68:1492 69:4156 70:1034 71:623 72:3005 74:2911 75:1519 76:601 77:2763 78:1911 79:1778 80:2284 81:2107 82:3754 83:1462 84:2018 85:3576 86:1108 87:2138 88:1333 89:4579 90:837 91:8394 92:2834 93:2989 94:4205 95:4566 96:1455 97:310 98:952 99:767 100:68 101:1283 102:4286 103:32812 104:5479 105:778 106:915 107:2796 108:1191 109:4192 110:2287 111:3867 112:2749 113:1897 114:2094 115:2240 116:2127 117:3099 118:3061 119:2031 120:2340 121:1502 122:2938 123:2264 124:1645 125:2926 126:125 128:1574 129:959 130:1496 131:2248 132:778 133:462 134:1629 135:385 136:1487 137:1135 138:2837 139:1596 140:1732 141:1542 142:2271 143:2122 144:1305 145:632 146:2177 147:2141 148:2788 149:2850 150:1303 151:2644 152:2277 153:602 154:8274 155:2253 156:3807 157:2208 158:1427 159:2669 160:3681 161:1991 162:3991 163:2317 164:1956 165:2587 166:1297 167:2152 168:3842 169:785 170:5418 171:1110 172:4471 173:3421 174:912 175:1355 176:3739 177:4669 178:4330 179:2260 180:2899 181:4321 182:3805 183:2535 184:2051 185:21676 186:5440 187:4728 188:4411 189:4441 190:9674 191:1533 192:11411 193:9512 194:7838 195:5587 196:3241 197:3345 198:6069 199:6094 200:8069 201:6368 202:10391 203:10550 204:4600 205:3658 206:4342 207:3738 208:4242 209:5380 210:4718 211:2650 212:4882 213:3996 214:1043 215:52 216:7107 217:3336 218:1572 219:402 220:2195 221:1268 222:762 223:3125 End of report