IPv4 R&E Routing Table Report 23:00 GMT Tue 20 Jan, 2026 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: 1025126 Prefixes after maximum aggregation (per Origin AS): 394918 Deaggregation factor: 2.60 Unique aggregates announced (without unneeded subnets): 507229 Number of IPv4 prefixes with a valid ROA: 612155 Number of IPv4 prefixes with an invalid ROA: 578 Number of IPv4 prefixes with no ROA: 412393 Total ASes present in the Internet Routing Table: 77715 Prefixes per ASN: 13.19 Origin-only ASes present in the Internet Routing Table: 66620 Origin ASes announcing only one prefix: 27162 Transit ASes present in the Internet Routing Table: 11095 Transit-only ASes present in the Internet Routing Table: 568 Paths with bogon ASNs present in the IPv4 Routing Table: 43 Average AS path length visible in the Internet Routing Table: 4.8 Max AS path length visible: 210 Max AS path prepend of ASN (214570) 200 Prefixes from unregistered ASNs in the Routing Table: 1021 Number of instances of unregistered ASNs: 1051 Number of 32-bit ASNs allocated by the RIRs: 48435 Number of 32-bit ASNs visible in the Routing Table: 39635 Prefixes from 32-bit ASNs in the Routing Table: 220911 Number of bogon 32-bit ASNs visible in the Routing Table: 78 Special use prefixes present in the Routing Table: 0 Prefixes being announced from unallocated address space: 476 Number of addresses announced to Internet: 3106106624 Equivalent to 185 /8s, 35 /16s and 109 /24s Percentage of available address space announced: 83.9 Percentage of allocated address space announced: 83.9 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: 334174 APNIC Region Analysis Summary ----------------------------- Prefixes being announced by APNIC Region ASes: 279905 Total APNIC prefixes after maximum aggregation: 81720 APNIC Deaggregation factor: 3.43 Prefixes being announced from the APNIC address blocks: 266468 Unique aggregates announced from the APNIC address blocks: 106959 APNIC Region origin ASes present in the Internet Routing Table: 14973 APNIC Prefixes per ASN: 17.80 APNIC Region origin ASes announcing only one prefix: 4551 APNIC Region transit ASes present in the Internet Routing Table: 2002 Average APNIC Region AS path length visible: 4.7 Max APNIC Region AS path length visible: 36 Number of APNIC region 32-bit ASNs visible in the Routing Table: 10555 Number of APNIC addresses announced to Internet: 753702400 Equivalent to 44 /8s, 236 /16s and 150 /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: 299620 Total ARIN prefixes after maximum aggregation: 134896 ARIN Deaggregation factor: 2.22 Prefixes being announced from the ARIN address blocks: 299671 Unique aggregates announced from the ARIN address blocks: 146171 ARIN Region origin ASes present in the Internet Routing Table: 19372 ARIN Prefixes per ASN: 15.47 ARIN Region origin ASes announcing only one prefix: 7072 ARIN Region transit ASes present in the Internet Routing Table: 1923 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: 5443 Number of ARIN addresses announced to Internet: 1344825856 Equivalent to 80 /8s, 40 /16s and 106 /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: 282434 Total RIPE prefixes after maximum aggregation: 139926 RIPE Deaggregation factor: 2.02 Prefixes being announced from the RIPE address blocks: 284137 Unique aggregates announced from the RIPE address blocks: 184584 RIPE Region origin ASes present in the Internet Routing Table: 29120 RIPE Prefixes per ASN: 9.76 RIPE Region origin ASes announcing only one prefix: 12116 RIPE Region transit ASes present in the Internet Routing Table: 4045 Average RIPE Region AS path length visible: 5.0 Max RIPE Region AS path length visible: 210 Number of RIPE region 32-bit ASNs visible in the Routing Table: 12916 Number of RIPE addresses announced to Internet: 733561856 Equivalent to 43 /8s, 185 /16s and 68 /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: 125768 Total LACNIC prefixes after maximum aggregation: 30757 LACNIC Deaggregation factor: 4.09 Prefixes being announced from the LACNIC address blocks: 121609 Unique aggregates announced from the LACNIC address blocks: 49706 LACNIC Region origin ASes present in the Internet Routing Table: 11345 LACNIC Prefixes per ASN: 10.72 LACNIC Region origin ASes announcing only one prefix: 2680 LACNIC Region transit ASes present in the Internet Routing Table: 2538 Average LACNIC Region AS path length visible: 5.3 Max LACNIC Region AS path length visible: 68 Number of LACNIC region 32-bit ASNs visible in the Routing Table: 9346 Number of LACNIC addresses announced to Internet: 170539520 Equivalent to 10 /8s, 42 /16s and 58 /24s LACNIC AS Blocks 26592-26623, 27648-28671, 52224-53247, 61440-61951, 64099-64197, 262144-275868 + 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: 36378 Total AfriNIC prefixes after maximum aggregation: 6930 AfriNIC Deaggregation factor: 5.25 Prefixes being announced from the AfriNIC address blocks: 52765 Unique aggregates announced from the AfriNIC address blocks: 19404 AfriNIC Region origin ASes present in the Internet Routing Table: 2008 AfriNIC Prefixes per ASN: 26.28 AfriNIC Region origin ASes announcing only one prefix: 743 AfriNIC Region transit ASes present in the Internet Routing Table: 385 Average AfriNIC Region AS path length visible: 5.3 Max AfriNIC Region AS path length visible: 58 Number of AfriNIC region 32-bit ASNs visible in the Routing Table: 1375 Number of AfriNIC addresses announced to Internet: 103190272 Equivalent to 6 /8s, 38 /16s and 143 /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 13521 8729 120 CHINAMOBILE-CN China Mobile Communication 7545 6027 833 573 TPG-INTERNET-AP TPG Telecom Limited, AU 9498 4699 543 342 BBIL-AP BHARTI Airtel Ltd., IN 18403 4452 347 24 FPT-AS-AP FPT Telecom Company, VN 7552 4052 1332 29 VIETEL-AS-AP Viettel Group, VN 7713 3730 1044 65 TELKOMNET-AS-AP PT Telekomunikasi Indones 56046 3419 832 183 CMNET-JIANGSU-AP China Mobile communicati 45899 3328 1868 98 VNPT-AS-VN VNPT Corp, VN 24560 2958 864 504 AIRTELBROADBAND-AS-AP Bharti Airtel Ltd., 17561 2802 176 548 LCS-AS-AP LARUS Limited, HK 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 14024 38706 5441 AMAZON-02 - Amazon.com, Inc., US 22773 4778 3099 364 ASN-CXA-ALL-CCI-22773-RDC - Cox Communica 11492 4620 307 1034 CABLEONE - CABLE ONE, INC., US 7155 3861 286 85 VIASAT-SP-BACKBONE - ViaSat,Inc., US 6327 3698 1321 70 SHAW - Shaw Communications, CA 396982 3328 4868 499 GOOGLE-CLOUD-PLATFORM - Google LLC, US 174 3198 8769 850 COGENT-174 - Cogent Communications, LLC, 749 3143 54729 2394 DNIC-AS-00749 - United States Department 16625 2820 1209 2122 AKAMAI-AS - Akamai Technologies, Inc., US 36352 2706 222 890 AS-COLOCROSSING - HostPapa, 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 7253 1711 149 UNI2-AS, ES 39891 4969 306 72 ALJAWWALSTC-AS, SA 9009 3909 366 2235 M247, RO 20940 3833 3393 111 AKAMAI-ASN1, NL 12389 3150 2317 869 ROSTELECOM-AS PJSC Rostelecom. Technical 212238 2574 183 1871 CDNEXT, GB 34984 2426 372 578 TELLCOM-AS, TR 8452 1713 1852 14 TE-AS TE-AS, EG 203020 1611 243 786 HOSTROYALE, IN 13188 1607 100 27 TRIOLAN, UA 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 12696 3302 601 UNINET, MX 10620 3441 457 1108 Telmex Colombia S.A., CO 13999 2486 508 351 Mega Cable, S.A. de C.V., MX 11830 1991 369 65 Instituto Costarricense de Electricidad y 28573 1375 2430 272 Claro NXT Telecomunicacoes Ltda, BR 3816 1339 770 213 COLOMBIA TELECOMUNICACIONES S.A. ESP BIC, 6147 1258 371 22 INTEGRATEL PERU S.A.A., PE 22884 1056 67 358 TOTAL PLAY TELECOMUNICACIONES SA DE CV, M 26615 1015 2486 56 TIM SA, BR 18881 908 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 1983 646 33 RAYA-AS, EG 36992 1841 1532 339 ETISALAT-MISR, EG 24863 1282 389 16 LINKdotNET-AS, EG 36903 1232 555 98 MT-MPLS, MA 36935 1144 522 45 Vodafone-, EG 37069 1101 1096 13 MOBINIL, EG 29571 1070 78 20 ORANGE-COTE-IVOIRE, CI 20011 580 154 212 NTT-DATA-Inc, ZA 36914 564 82 3 KENET-AS, KE 328608 561 48 172 Africa-on-Cloud-AS, ZA 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 14024 38706 5441 AMAZON-02 - Amazon.com, Inc., US 9808 13521 8729 120 CHINAMOBILE-CN China Mobile Communication 8151 12696 3302 601 UNINET, MX 12479 7253 1711 149 UNI2-AS, ES 7545 6027 833 573 TPG-INTERNET-AP TPG Telecom Limited, AU 39891 4969 306 72 ALJAWWALSTC-AS, SA 22773 4778 3099 364 ASN-CXA-ALL-CCI-22773-RDC - Cox Communica 9498 4699 543 342 BBIL-AP BHARTI Airtel Ltd., IN 11492 4620 307 1034 CABLEONE - CABLE ONE, INC., US 18403 4452 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 13521 13401 CHINAMOBILE-CN China Mobile Communications Grou 8151 12696 12095 UNINET, MX 12479 7253 7104 UNI2-AS, ES 7545 6027 5454 TPG-INTERNET-AP TPG Telecom Limited, AU 39891 4969 4897 ALJAWWALSTC-AS, SA 18403 4452 4428 FPT-AS-AP FPT Telecom Company, VN 22773 4778 4414 ASN-CXA-ALL-CCI-22773-RDC - Cox Communications 9498 4699 4357 BBIL-AP BHARTI Airtel Ltd., IN 7552 4052 4023 VIETEL-AS-AP Viettel Group, VN 7155 3861 3776 VIASAT-SP-BACKBONE - ViaSat,Inc., US 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 393266 UNALLOCATED 8.23.52.0/24 46887 CROWNCASTLE-AS46887 - C 396894 UNALLOCATED 8.28.201.0/24 3356 LEVEL3 - Level 3 Parent 394936 UNALLOCATED 8.33.224.0/24 22442 HOU-PHONOSCOPE - Phonos 395195 UNALLOCATED 8.38.115.0/24 3356 LEVEL3 - Level 3 Parent 1782 UNALLOCATED 8.42.19.0/24 3356 LEVEL3 - Level 3 Parent 13342 UNALLOCATED 12.17.5.0/24 174 COGENT-174 - Cogent Com 26345 UNALLOCATED 12.21.93.0/24 40264 TWC-40264-WI-MN-UPPERMI 396831 UNALLOCATED 12.23.198.0/24 7018 ATT-INTERNET4 - AT&T En 395476 UNALLOCATED 12.36.194.0/24 7018 ATT-INTERNET4 - AT&T En 395476 UNALLOCATED 12.36.195.0/24 3356 LEVEL3 - Level 3 Parent Complete listing at https://bgp.nsrc.org/REN/Singapore/data-badAS Advertised Unallocated Addresses -------------------------------- Unassigned Network ASN Information AS Name 23.137.48.0/24 Origin: 16904 ARVIG-16904 - Arvig Enterprises Inc., US 23.137.48.0/24 Transit: 174 COGENT-174 - Cogent Communications, LLC, 23.137.200.0/24 Origin: 16276 OVH, FR 23.137.200.0/24 Transit: 174 COGENT-174 - Cogent Communications, LLC, 23.140.216.0/24 Origin: 27176 DATAWAGON - DataWagon LLC, US 23.140.216.0/24 Transit: 20278 NEXEON - Nexeon Technologies, Inc., US 23.141.0.0/24 Origin: 395350 RESERVED, ZZ 23.141.0.0/24 Transit: 11426 TWC-11426-CAROLINAS - Charter Communicat 23.142.24.0/24 Origin: 62164 HEYMMAN-2, CA 23.142.24.0/24 Transit: 64236 UNREAL-SERVERS - UnReal Servers, LLC, 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 /10:40 /11:93 /12:302 /13:578 /14:1198 /15:2088 /16:13668 /17:8180 /18:13453 /19:24732 /20:44695 /21:52032 /22:113230 /23:105977 /24:644830 /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 6874 12696 UNINET, MX 12479 6183 7253 UNI2-AS, ES 39891 3655 4969 ALJAWWALSTC-AS, SA 11492 3485 4620 CABLEONE - CABLE ONE, INC., US 6327 3479 3698 SHAW - Shaw Communications, CA 22773 3049 4778 ASN-CXA-ALL-CCI-22773-RDC - Cox Communications Inc., US 7155 2820 3861 VIASAT-SP-BACKBONE - ViaSat,Inc., US 16509 2484 14024 AMAZON-02 - Amazon.com, Inc., US 30036 2307 2649 MEDIACOM-ENTERPRISE-BUSINESS - Mediacom Communications Corp, US 10620 2221 3441 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) ---------------------------------------------- 1:2501 2:1516 3:978 4:9 5:4992 6:185 7:6 8:1491 9:14 11:172 12:1226 13:621 14:2640 15:414 16:179 17:391 18:917 20:596 21:4 22:188 23:8128 24:2620 25:2 27:2816 29:19 31:3418 32:31 34:84 35:290 36:4641 37:4526 38:9894 39:1248 40:438 41:4469 42:1986 43:2987 44:412 45:19681 46:4940 47:401 48:20 49:2196 50:2063 51:598 52:1255 54:235 55:1125 56:11 57:308 58:2341 59:1365 60:1171 61:3126 62:3085 63:1764 64:6191 65:2133 66:5988 67:3254 68:1483 69:4205 70:1030 71:617 72:3079 74:2950 75:1513 76:606 77:2730 78:1917 79:1804 80:2296 81:2114 82:4032 83:1474 84:2020 85:3665 86:1097 87:2229 88:1342 89:4629 90:830 91:8400 92:2852 93:3012 94:4273 95:4517 96:1449 97:312 98:956 99:782 100:69 101:1581 102:4358 103:32891 104:5445 105:790 106:906 107:2822 108:1219 109:4209 110:2314 111:4053 112:3080 113:1978 114:2167 115:2266 116:2180 117:3290 118:2981 119:2116 120:2588 121:1508 122:2961 123:2293 124:1652 125:2977 126:125 128:1579 129:940 130:1543 131:2278 132:767 133:461 134:1619 135:534 136:1627 137:1283 138:2984 139:1616 140:1764 141:1562 142:2471 143:2136 144:1561 145:631 146:2194 147:2274 148:2812 149:2920 150:1328 151:2605 152:2270 153:846 154:9536 155:2276 156:4404 157:2256 158:1495 159:2744 160:3653 161:2000 162:4014 163:2330 164:1972 165:2651 166:1303 167:2200 168:3918 169:858 170:5461 171:1117 172:4560 173:3425 174:891 175:1356 176:3768 177:4722 178:4279 179:2284 180:3135 181:4371 182:3894 183:2750 184:2020 185:21646 186:5530 187:4827 188:4617 189:4499 190:9677 191:1517 192:11420 193:9480 194:7844 195:5675 196:3256 197:3271 198:6074 199:6119 200:8052 201:6387 202:10590 203:10611 204:4705 205:3700 206:4345 207:3806 208:4363 209:5434 210:4730 211:2686 212:4958 213:4048 214:1047 215:54 216:7132 217:3448 218:1621 219:421 220:2192 221:1308 222:876 223:3282 End of report