[REN-BGP-stats-all] IPv4 R&E Routing Table Report - Internet2 (R&E) view
REN Routing Table Report
cscora at bgp.nsrc.org
Wed Jan 8 22:00:45 UTC 2025
IPv4 R&E Routing Table Report 22:00 GMT Wed 08 Jan, 2025
IPv4 BGP Table (R&E) as seen at Internet2.
Report Website: https://bgp.nsrc.org/REN
Detailed Analysis: https://bgp.nsrc.org/REN/Internet2/
Analysis Summary
----------------
BGP routing table entries examined: 24814
Prefixes after maximum aggregation (per Origin AS): 13604
Deaggregation factor: 1.82
Unique aggregates announced (without unneeded subnets): 15872
Number of IPv4 prefixes with a valid ROA: 12581
Number of IPv4 prefixes with an invalid ROA: 20
Number of IPv4 prefixes with no ROA: 12213
Total ASes present in the Internet Routing Table: 2793
Prefixes per ASN: 8.88
Origin-only ASes present in the Internet Routing Table: 2415
Origin ASes announcing only one prefix: 1078
Transit ASes present in the Internet Routing Table: 378
Transit-only ASes present in the Internet Routing Table: 67
Paths with bogon ASNs present in the IPv4 Routing Table: 0
Average AS path length visible in the Internet Routing Table: 3.4
Max AS path length visible: 27
Max AS path prepend of ASN (138136) 20
Prefixes from unregistered ASNs in the Routing Table: 1
Number of instances of unregistered ASNs: 1
Number of 32-bit ASNs allocated by the RIRs: 45985
Number of 32-bit ASNs visible in the Routing Table: 673
Prefixes from 32-bit ASNs in the Routing Table: 1824
Number of bogon 32-bit ASNs visible in the Routing Table: 0
Special use prefixes present in the Routing Table: 0
Prefixes being announced from unallocated address space: 9
Number of addresses announced to Internet: 241799504
Equivalent to 14 /8s, 105 /16s and 145 /24s
Percentage of available address space announced: 6.5
Percentage of allocated address space announced: 6.5
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: 3473
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 4693
Total APNIC prefixes after maximum aggregation: 2258
APNIC Deaggregation factor: 2.08
Prefixes being announced from the APNIC address blocks: 4807
Unique aggregates announced from the APNIC address blocks: 2727
APNIC Region origin ASes present in the Internet Routing Table: 560
APNIC Prefixes per ASN: 8.58
APNIC Region origin ASes announcing only one prefix: 240
APNIC Region transit ASes present in the Internet Routing Table: 59
Average APNIC Region AS path length visible: 3.9
Max APNIC Region AS path length visible: 27
Number of APNIC region 32-bit ASNs visible in the Routing Table: 210
Number of APNIC addresses announced to Internet: 45780032
Equivalent to 2 /8s, 186 /16s and 140 /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: 13884
Total ARIN prefixes after maximum aggregation: 7716
ARIN Deaggregation factor: 1.80
Prefixes being announced from the ARIN address blocks: 13603
Unique aggregates announced from the ARIN address blocks: 9019
ARIN Region origin ASes present in the Internet Routing Table: 1285
ARIN Prefixes per ASN: 10.59
ARIN Region origin ASes announcing only one prefix: 450
ARIN Region transit ASes present in the Internet Routing Table: 155
Average ARIN Region AS path length visible: 3.1
Max ARIN Region AS path length visible: 15
Number of ARIN region 32-bit ASNs visible in the Routing Table: 208
Number of ARIN addresses announced to Internet: 130776144
Equivalent to 7 /8s, 203 /16s and 124 /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: 3644
Total RIPE prefixes after maximum aggregation: 2915
RIPE Deaggregation factor: 1.25
Prefixes being announced from the RIPE address blocks: 3795
Unique aggregates announced from the RIPE address blocks: 3179
RIPE Region origin ASes present in the Internet Routing Table: 673
RIPE Prefixes per ASN: 5.64
RIPE Region origin ASes announcing only one prefix: 301
RIPE Region transit ASes present in the Internet Routing Table: 111
Average RIPE Region AS path length visible: 3.7
Max RIPE Region AS path length visible: 13
Number of RIPE region 32-bit ASNs visible in the Routing Table: 160
Number of RIPE addresses announced to Internet: 58659456
Equivalent to 3 /8s, 127 /16s and 18 /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: 1454
Total LACNIC prefixes after maximum aggregation: 537
LACNIC Deaggregation factor: 2.71
Prefixes being announced from the LACNIC address blocks: 1461
Unique aggregates announced from the LACNIC address blocks: 714
LACNIC Region origin ASes present in the Internet Routing Table: 156
LACNIC Prefixes per ASN: 9.37
LACNIC Region origin ASes announcing only one prefix: 56
LACNIC Region transit ASes present in the Internet Routing Table: 23
Average LACNIC Region AS path length visible: 4.1
Max LACNIC Region AS path length visible: 13
Number of LACNIC region 32-bit ASNs visible in the Routing Table: 65
Number of LACNIC addresses announced to Internet: 4171072
Equivalent to 0 /8s, 63 /16s and 165 /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: 1138
Total AfriNIC prefixes after maximum aggregation: 177
AfriNIC Deaggregation factor: 6.43
Prefixes being announced from the AfriNIC address blocks: 1139
Unique aggregates announced from the AfriNIC address blocks: 224
AfriNIC Region origin ASes present in the Internet Routing Table: 51
AfriNIC Prefixes per ASN: 22.33
AfriNIC Region origin ASes announcing only one prefix: 31
AfriNIC Region transit ASes present in the Internet Routing Table: 10
Average AfriNIC Region AS path length visible: 2.9
Max AfriNIC Region AS path length visible: 19
Number of AfriNIC region 32-bit ASNs visible in the Routing Table: 30
Number of AfriNIC addresses announced to Internet: 2408704
Equivalent to 0 /8s, 36 /16s and 193 /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
2907 637 2202 464 SINET-AS Research Organization of Informa
7497 451 212 25 CSTNET-AS-AP Computer Network Information
1237 194 74 146 KREONET-AS-KR KISTI, KR
58647 182 18 2 KAGAWAU-AS Kagawa University, JP
7575 173 313 116 AARNET-AS-AP Australian Academic and Rese
55824 146 19 20 NKN-CORE-NW NKN Core Network, IN
4538 139 4192 71 ERX-CERNET-BKB China Education and Resear
4762 75 4 1 MAHIDOL-BORDER-AS Mahidol University, Tha
4621 69 37 10 UNINET-AS-AP UNINET-, TH
2697 59 4 34 ERX-ERNET-AS Education and Research Netwo
Complete listing at https://bgp.nsrc.org/REN/Internet2/data-ASnet-APNIC
ARIN Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
16509 4051 4895 1954 AMAZON-02, US
14618 1005 4444 762 AMAZON-AES, US
2152 431 507 98 CENIC-2152, US
2920 225 44 51 LACOE, US
668 202 638 173 DNIC-AS-00668, US
376 201 162 150 RISQ-AS, CA
5786 198 16 1 UPRENET, PR
18558 140 18 5 NETBLK-RCOEK, US
81 129 519 34 NCREN, US
1 128 2 49 LVLT-1, US
Complete listing at https://bgp.nsrc.org/REN/Internet2/data-ASnet-ARIN
RIPE Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
680 284 1899 249 DFN Verein zur Foerderung eines Deutschen
786 185 1767 182 JANET Jisc Services Limited, GB
8895 129 24 5 ISU Internet Services Unit ISU, SA
559 114 533 104 SWITCH Peering requests: peering at switch.c
1103 96 1743 83 SURFNET-NL SURFnet, The Netherlands, NL
2614 93 26 73 ROEDUNET, RO
8987 83 227 60 AMAZON EXPANSION, IE
137 82 677 77 ASGARR Consortium GARR, IT
1930 79 88 74 RCCN Fundacao para a Ciencia e a Tecnolog
553 78 462 78 BELWUE BelWue-Koordination, DE
Complete listing at https://bgp.nsrc.org/REN/Internet2/data-ASnet-RIPE
LACNIC Region per AS prefix count summary
-----------------------------------------
ASN No of nets /20 equiv MaxAgg Description
1916 218 178 43 Rede Nacional de Ensino e Pesquisa, BR
28391 157 10 69 Universidad Juarez Autonoma de Tabasco, M
11340 108 25 51 Red Universitaria Nacional, CL
271640 67 8 1 UNIVERSIDADE FEDERAL DE VICOSA, BR
61468 52 5 17 CEDIA, EC
2715 49 99 35 Fundacao Carlos Chagas Filho de Amparo a
19611 48 17 2 Associacao Antonio Vieira - Unisinos, BR
4270 46 16 1 Red de Interconexion Universitaria, AR
3596 40 8 4 Universidad Autonoma Metropolitana, MX
28614 38 2 2 Fundacao Universidade Regional de Blumena
Complete listing at https://bgp.nsrc.org/REN/Internet2/data-ASnet-LACNIC
AfriNIC Region per AS prefix count summary
------------------------------------------
ASN No of nets /20 equiv MaxAgg Description
36914 542 82 3 KENET-AS, KE
2018 380 319 71 TENET-1, ZA
8094 47 48 18 PUKNET, ZA
37215 32 8 1 MAREN, MW
6879 24 2 9 ENSTINET-, EG
37661 12 8 4 NRaE1-AS, NG
327700 12 16 1 MoRENet, MZ
37501 11 49 6 UOFS, ZA
36982 8 33 8 UCT, ZA
37182 7 0 7 TERNET, TZ
Complete listing at https://bgp.nsrc.org/REN/Internet2/data-ASnet-AFRINIC
Global Per AS prefix count summary
----------------------------------
ASN No of nets /20 equiv MaxAgg Description
16509 4051 4895 1954 AMAZON-02, US
14618 1005 4444 762 AMAZON-AES, US
2907 637 2202 464 SINET-AS Research Organization of Informa
36914 542 82 3 KENET-AS, KE
7497 451 212 25 CSTNET-AS-AP Computer Network Information
2152 431 507 98 CENIC-2152, US
2018 380 319 71 TENET-1, ZA
680 284 1899 249 DFN Verein zur Foerderung eines Deutschen
2920 225 44 51 LACOE, US
1916 218 178 43 Rede Nacional de Ensino e Pesquisa, BR
Complete listing at https://bgp.nsrc.org/REN/Internet2/data-ASnet
Global Per AS Maximum Aggregation summary
-----------------------------------------
ASN No of nets Net Savings Description
36914 542 539 KENET-AS, KE
7497 451 426 CSTNET-AS-AP Computer Network Information Cente
2152 431 333 CENIC-2152, US
2018 380 309 TENET-1, ZA
14618 1005 243 AMAZON-AES, US
5786 198 197 UPRENET, PR
58647 182 180 KAGAWAU-AS Kagawa University, JP
1916 218 175 Rede Nacional de Ensino e Pesquisa, BR
2920 225 174 LACOE, US
2907 637 173 SINET-AS Research Organization of Information a
Complete listing at https://bgp.nsrc.org/REN/Internet2/data-CIDRnet
List of Unregistered Origin ASNs (Global)
-----------------------------------------
Bad AS Designation Net Originated Transit AS Transit AS Name
26971 UNALLOCATED 129.111.0.0/16 276 OTS-AS-276, US
Complete listing at https://bgp.nsrc.org/REN/Internet2/data-badAS
Advertised Unallocated Addresses
--------------------------------
Unassigned Network ASN Information AS Name
64.186.3.0/24 Origin: 16509 AMAZON-02, US
64.186.3.0/24 Transit: 11537 INTERNET2-RESEARCH-EDU, US
103.165.160.0/24 Origin: 16509 AMAZON-02, US
103.165.160.0/24 Transit: 11537 INTERNET2-RESEARCH-EDU, US
164.160.192.0/21 Origin: 37661 NRaE1-AS, NG
164.160.192.0/21 Transit: 37288 WACREN, SN
192.225.212.0/24 Origin: 14618 AMAZON-AES, US
192.225.212.0/24 Transit: 16509 AMAZON-02, US
192.225.223.0/24 Origin: 14618 AMAZON-AES, US
192.225.223.0/24 Transit: 16509 AMAZON-02, US
Complete listing at https://bgp.nsrc.org/REN/Internet2/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 /8:0 /9:1 /10:1 /11:3 /12:18
/13:28 /14:58 /15:174 /16:2063 /17:482 /18:502
/19:645 /20:1002 /21:1125 /22:1743 /23:1907 /24:14782
/25:43 /26:67 /27:97 /28:11 /29:59 /30:0
/31:0 /32:3
Advertised prefixes smaller than registry allocations
-----------------------------------------------------
ASN No of nets Total ann. Description
16509 670 4051 AMAZON-02, US
36914 518 542 KENET-AS, KE
14618 315 1005 AMAZON-AES, US
8895 124 129 ISU Internet Services Unit ISU, SA
1916 60 218 Rede Nacional de Ensino e Pesquisa, BR
2152 58 431 CENIC-2152, US
1 42 128 LVLT-1, US
23024 37 97 OCDE, US
3267 34 78 NIKS, RU
32440 33 58 LONI, US
Complete listing at https://bgp.nsrc.org/REN/Internet2/data-sXXas-nos
Number of /24s announced per /8 block (Global)
----------------------------------------------
1:3 3:170 4:2 5:20 6:4 8:2
12:2 13:56 14:93 15:103 16:129 18:155
23:49 24:3 31:3 35:40 37:8 38:11
40:5 41:227 42:11 44:4 45:73 46:10
47:1 49:11 50:11 52:830 54:178 58:1
59:19 60:6 61:3 62:8 63:38 64:148
65:25 66:98 67:68 68:27 69:57 70:21
71:16 72:18 74:79 75:1 76:46 77:12
78:3 79:10 80:12 81:25 82:7 83:7
84:11 85:49 86:5 87:2 88:1 89:19
91:52 92:4 93:45 94:2 95:2 96:7
97:1 98:14 99:68 101:1 102:14 103:336
104:134 107:8 108:35 109:7 111:21 113:1
114:24 115:1 116:14 117:66 118:33 119:23
121:28 122:11 123:8 124:42 125:5 128:56
129:41 130:163 131:73 132:66 133:155 134:112
135:2 136:224 137:77 138:65 139:20 140:47
141:13 142:64 143:33 144:41 145:4 146:138
147:75 148:209 149:20 150:73 151:36 152:142
153:14 154:41 155:104 156:133 157:40 158:41
159:168 160:37 161:41 162:74 163:76 164:23
165:78 166:4 167:37 168:173 169:15 170:186
171:1 172:19 173:39 174:2 175:16 176:4
177:6 178:1 179:14 180:16 181:1 182:11
184:9 185:86 186:3 187:22 188:16 189:3
190:34 191:13 192:1598 193:292 194:124 195:76
196:146 197:325 198:600 199:347 200:268 201:37
202:658 203:450 204:423 205:203 206:247 207:341
208:132 209:192 210:220 211:3 212:169 213:19
214:8 216:215 217:14 218:23 219:6 220:16
222:2 223:15
End of report
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